#include <metal_stdlib>
#include <simd/simd.h>

using namespace metal;

constant uint3 gl_WorkGroupSize = uint3(8u, 8u, 1u);

struct UBO
{
    float4 uInvSize;
    float4 uScale;
};

kernel void main0(uint3 gl_GlobalInvocationID [[thread_position_in_grid]], constant UBO& _46 [[buffer(0)]], texture2d<float> uHeight [[texture(0)]], sampler uHeightSmplr [[sampler(0)]], texture2d<float> uDisplacement [[texture(1)]], sampler uDisplacementSmplr [[sampler(1)]], texture2d<float, access::write> iHeightDisplacement [[texture(2)]], texture2d<float, access::write> iGradJacobian [[texture(3)]])
{
    float4 _59 = (float2(gl_GlobalInvocationID.xy) * _46.uInvSize.xy).xyxy + (_46.uInvSize * 0.5);
    float2 _157 = ((uDisplacement.sample(uDisplacementSmplr, _59.zw, level(0.0), int2(1, 0)).xy - uDisplacement.sample(uDisplacementSmplr, _59.zw, level(0.0), int2(-1, 0)).xy) * 0.60000002384185791015625) * _46.uScale.z;
    float2 _161 = ((uDisplacement.sample(uDisplacementSmplr, _59.zw, level(0.0), int2(0, 1)).xy - uDisplacement.sample(uDisplacementSmplr, _59.zw, level(0.0), int2(0, -1)).xy) * 0.60000002384185791015625) * _46.uScale.z;
    iHeightDisplacement.write(float4(uHeight.sample(uHeightSmplr, _59.xy, level(0.0)).x, 0.0, 0.0, 0.0), uint2(int2(gl_GlobalInvocationID.xy)));
    iGradJacobian.write(float4((_46.uScale.xy * 0.5) * float2(uHeight.sample(uHeightSmplr, _59.xy, level(0.0), int2(1, 0)).x - uHeight.sample(uHeightSmplr, _59.xy, level(0.0), int2(-1, 0)).x, uHeight.sample(uHeightSmplr, _59.xy, level(0.0), int2(0, 1)).x - uHeight.sample(uHeightSmplr, _59.xy, level(0.0), int2(0, -1)).x), ((1.0 + _157.x) * (1.0 + _161.y)) - (_157.y * _161.x), 0.0), uint2(int2(gl_GlobalInvocationID.xy)));
}